A part-of-speech (POS) tag identifies a word’s grammatical category, such as noun, verb, or adjective. In dictionaries and lexicons, this information helps clarify a word’s role within a sentence, supporting more accurate parsing and interpretation. section 5.6.1
POS tags become useful when selecting or interpreting language resources:
- Use POS-tagged entries when sentiment analysis needs to account for grammatical structure. section 5.6.3
- Prefer lemma-based entries when the goal is to assess overall text sentiment rather than individual grammatical forms. section 5.6.3
Choosing a sentiment lexicon file
SentiLex-flex-PT02.txt likely contains words with POS tags and polarity scores, while SentiLex-lem-PT02.txt likely contains base forms with polarity scores. Compare both when the best fit for the dataset or task is uncertain. section 5.6.3
